Inkstand



(No Model.) Y

. J.Y D. BROODER 8v A. B. THOMAS.

INKSTAND.

Patented July l, 1890.

Mizesses.

UNITED STATES PATENT OFFICE.

JOIIN D. BROODER AND ALBERT B. THOMAS, OF KANE, PENNSYLVANIA.

INKSTAN D.

SPECIFICATION forming part of Letters Patent No. 431,247, dated July 1, 1890. Application iiled November 29, 1889. Serial No. 331,847. (No model.)

To all whom t may concern:

Be it known that we, JOHN D. BROODER and ALBERT B. THOMAS, citizens of the United States, residing at Kane, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Inkstands, of which the following is a specification.

Our invention relates to that class of inkstands wherein sufficient ink to fill the p'en once is pumped into a suitable dip-tube, any surplus running back into the ink-well, where it is protected from dirt and evaporation.

IVe prefer to embody our invention in the form shown in the accompanying drawing, which is hereby attached to and made a part of this specification.

The drawing hereto attached is asection of one of our improved inkstands.

Referring to the drawing in detail, A is the funnel or opening in which the pen is to be dipped, which is flared, as hereinafter referred to.

B is the tube or tunnel in which the ink rises, which is made taper from bottom to top. This is also provided with a piston G, which is a working fit in the chamber H.

C is the wall of the inkwell, of any suitable material.

D is the cover of the well, which is provided with a downwardly-projecting chamber R.

E is a spring, of aluminum bronze orbrass or steel wire plated with aluminum.

F is a port in the piston G, giving access to the tube" B.

G is a piston working in the chamber II. This piston is made with a chamber-head T, having ports S S.

I( is a set-screw, which, in combination with the lugs a a on the flared mouth, limits the play of the tube B.

The piston G is chambered, as described. By reason of this, as well as by reason of the tube B being taper on its inside, any accu mulation of pressure in the tube during 'ac tion is avoided, and a spurt of ink from sudden pressure is prevented.

The pperation of this device is as follows:

The pen is dipped into the funnel A and pressed slightly, (the spring E having just sulicient elasticity. to keep the tube in place, so as to make the pressure necessary as slight as possible.) This moves the tube B downward, causing the piston G to enter the chamber H. The ink in this chamber is forced up into the tube, filling it, together with the funnel A, to the height of the dotted line. The

I cubic contents of the chamber H must be so calculated as to allow of its containing substantially this quantity of ink and no more, in order to prevent overflow. the pen'the tube is raised by the spring E until stopped by the set-screw K, and the surplus ink runs back into the well.

The object of employing a wire of aluminum bronze or wire plated with aluminum for the spring E is to prevent corrosion from the ink should any touch the spring.

The parts are threaded together in the manner shown, so as to be readily taken apart for cleaning, although they may be readily cleaned by merely soaking in water.

The piston hereinbefore described has been found useful by us in many ways. We therefore do notclaim it in this application, but reserve the right to file another application therefor, and do not abandon it to the public by reason of not claiming it herein.

Ve do not limit ourselves to the particular form of piston herein described, but may employ any other suitable form.

Having thus described our invention, what we claim and desire to protect by Letters Patent of the United States, is-

1. In an inkstand, the tapered tube or tunnel B, for conveying ink to the dipfunnel A, substantially as described.

2. In an inkstand, the tube or tunnel B, tapered from bottom to top, and provided with the piston G at its lower end, reciprocating in the chamber H formed in the bottom of the ink-well, substantially as described.

3. In an inkstand, the chamber I-I formed. in the bottom of an ink-well, of such cubic capacity as to till the tube B and funnel A without- Overiiow, in combination with the tapered tube or tunnel B, carrying a piston G, adapted On removing to reciprocate in the sad chamber H, sub- In witness whereof We hereunto set our stantially as described. hands in the presence of two witnesses.

4.Y In an inkstand, the combination of the JOHN D. BROODER. ink-Well C, the tube B,the piston G, and eham- ALBERT B. THOMAS. 5 ber H, wherein the piston reeiproeates, with Vitnesses:

the spring E, adapted to lift the piston, sub- F. A. VAN ORSDALL, stantally as described. JOHN FLEMING. 

